| 山区长距离输水工程控制坐标框架建立关键技术研究 |
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| 引用本文： | 吴恒友.山区长距离输水工程控制坐标框架建立关键技术研究[J].测绘与空间地理信息,2017,40(7). |
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| 作者姓名： | 吴恒友 |
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| 作者单位： | 贵州省水利水电勘测设计研究院,贵州 贵阳,550002 |
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| 摘 要： | 依据投影变形理论,提出了一种山区长距离输水工程控制坐标框架建立长度变形控制方法。针对高海拔、山区、长距离等输水工程特点,提出适用于建立独立工程坐标框架系统的关键技术解决方案。依据输水建筑分类分带代替国家标准3°分带,投影面的设置以各类输水线路起点和终点的高程取平均值来确定,能很好地控制高斯投影变形。尽量减少投影面和中央子午线设置个数,采用兼顾利用的原则进行优化计算。本文利用两个实例分别加以论证,充分证明该方法可以很好地控制长度变形。
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| 关 键 词： | 长距离输水工程 长度变形 独立工程控制网 |
Study on Key Technology of Control Coordinate Frame for Long Distance Water Conveyance Project in Mountainous Area |
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| WU Heng-you.Study on Key Technology of Control Coordinate Frame for Long Distance Water Conveyance Project in Mountainous Area[J].Geomatics & Spatial Information Technology,2017,40(7). |
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| Authors: | WU Heng-you |
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| Abstract: | According to the theory of projection deformation, a method of controlling the length of deformation control of mountain long distance water conveyance project is proposed.Aiming at the characteristics of high-altitude, mountainous and long-distance water transportation projects, this paper puts forward the key technical solutions for establishing independent engineering coordinate frame system.According to the classification of water supply construction classification instead of the national standard 3° zonation, the projection plane is set to the average of the starting point and the end point of the water supply line to determine the Gaussian projection deformation.To minimize the number of projection plane and the central meridian set the number of the use of the principle of optimization calculation.In this paper, two examples are used to demonstrate that the method can well control the length deformation. |
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| Keywords: | long distance water conveyance project length deformation independent engineering control network |
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